Si2183/82/81/80 Digital ISDB-T TV Demodulators

The Si2183/82/81/80 integrates digital demodulators for ISDB-T and all of the first, second and third generation DVB video broadcasting standards, ISDB-T/DVB-T2/C2/S2X/S2/T/C/S, ISDB-T/DVB-T2/S2X/S2/T/C/S, ISDB-T/DVB-S2X/S2/T/C/S, and ISDB-T/DVB-T/C respectively, in a single advanced CMOS die. Leveraging Silicon Labs' proven digital demodulation architecture, the Si2183/82/81/80 achieves excellent reception performance for each media, while significantly minimizing front-end design complexity, cost and power dissipation.

Connecting the Si2183/82/81/80 to a terrestrial and cable hybrid TV tuner or digital only tuner, such as Silicon Labs' Si2177, Si2151, and Si2141 results in a high-performance and cost optimized TV front-end solution.

Silicon Labs’ multi-standard demodulator can accept a standard IF (36 MHz) or low-IF input for terrestrial and cable standards. The ISDB-T demodulator supports all modes specified by current ABNT NBR 16.601 and ABNT NBR 15.604 specifications. The main features of the ISDB-T mode are three layers decoding, TMCC decoding, support for differential demodulation, partial reception decoding, and AC1, AC2 decoding. The DVB-T2 demodulator supports all modes specified by current DVB-T2-V1.3.1 standard. The main features of the DVB-T2 and T2-Lite modes are 256 QAM with rotated constellations, SISO and MISO support, FEF management, fully autonomous signal acquisition including automatic L1 signaling parsing, scrambling of L1 post-signaling, 600 kHz acquisition range, support for all pilot patterns, and DVB-T2/T auto-detection.

The satellite demodulation functionality allows demodulating widespread DVB-S, DIRECTV™ (DSS), DVB-S2, and DIRECTV™ (AMC) legacy standards, as well as new Part II of DVB-S2 (S2X) satellite broadcast standard. Broadcast services, variable coding and modulation (VCM), 8, 16, 32 APSK modulations and code rates, new shorten roll-off factors, are the main specifications of the new DVB-S2 demodulator. A zero-IF interface allows for a seamless connection to market proven satellite silicon tuners. It also integrates DiSEqC™ 2.0 LNB interface for satellite dish control and an equalizer to compensate for echoes in long cable feeds from the LNB to the satellite tuner RF input.

The Si218x offers an on-chip blind scan algorithm for DVB-S2X/S2/S and DVB-C2/C standards, as well as a blind lock function. The Si218x programmable transport stream output interface provides a flexible range of output modes and is fully compatible with all MPEG decoders or conditional access modules to support any customer application.